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Investigating Groundwater Pollution: Soil Porosity and Infiltration Rates

Join us in today's environmental science lab where we explore groundwater pollution through hands-on experiments. We’ll investigate the relationship between different soil types—sand, gravel, topsoil, and clay—and their porosity levels. Our primary questions focus on how long it takes for a solution to filter through each soil type and which is the most or least porous. By forming hypotheses and predictions, students will gather and analyze data to understand the crucial role of soil in groundwater quality.

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Investigating Groundwater Pollution: Soil Porosity and Infiltration Rates

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Presentation Transcript

  1. Environmental Science Lab “Groundwater Pollution” • Recall from last day: • POROSITY refers to the amount of space between particles of soil • Fluid stored in and around pores of soil is referred to as GROUNDWATER • INFILTRATION is how water moves through pores in the soil, eventually reaching stored groundwater • A large collection of groundwater underneath soil layers where we draw drinking water from is called the AQUIFER SURFACE

  2. Today’s Lab • 4groups of 4-5 students: • Groups 1 – SAND • Groups 2 – GRAVEL • Groups 3 – TOP SOIL • Groups 4 – CLAY

  3. Lab Setup TIME?

  4. What are we investigating? • QUESTION 1: HOW LONG DOES IT TAKE FOR THE SOLUTION TO FILTER THROUGH A GIVEN SOIL TYPE? • QUESTION 2: WHICH SOIL TYPE IS THE MOST POROUS? THE LEAST POROUS?

  5. HYPOTHESIS?? PREDICTIONS??

  6. Class Data

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